950713 - Implement a dynamic immediate (non-retained) SkiaGL rasterizing layer

Status: RESOLVED INVALID

(Core :: Graphics: Layers, defect)

Description

[Benoit Girard (:BenWa)]

Attachment: Prototype

This is a prototype implementation for how we might implement something like |will-change: contents| but really we should modify FrameLayerBuilder to find active subparts of the page that are changing frequently.

The idea is we identify parts of the page that are mostly static or have contents that aren't friendly to something like SkiaGL and render those with software. When we detect a part of the page is dynamic and has SkiaGL friendly contents we create a dynamic SkiaGL.

This can be useful for something like B2G where we can't turn on SkiaGL for content but could still benefit from using it for a subset of the page that's animated.

Comment 1

[Benoit Girard (:BenWa)]

Attachment: grads.html

This testcase is 3 times faster with this prototype but even then it's hitting some slow paths in skiaGL so it should be much faster.

Comment 2

[Benoit Girard (:BenWa)]

Attachment: Prototype